Stop debugging fax failures.
Let AI do it.
The developer-first fax API for healthcare. Send, receive, and diagnose faxes with AI-powered root cause analysis — built on infrastructure you can trust with PHI.
$ curl -X POST https://api.faxdr.io/v1/send \ -H "X-FaxDr-Api-Key: faxdr_sk_live_..." \ -d '{"to": "+16165551234", "pdf_url": "https://..."}' # → {"status": "queued", "fax_id": "fx_9k2m..."}
How It Works
Three steps to production fax
Provision
Get a dedicated fax number in seconds. Search by state and city, provision with one API call.
Send & Receive
Send PDFs via API, receive inbound faxes via webhook. Real-time status updates for every page.
AI Diagnoses
When faxes fail, Gemini AI analyzes the SIP trace and tells you exactly why — carrier mismatch, codec rejection, T.38 negotiation failure.
Features
Everything you need to ship fax
Production-grade infrastructure so you can focus on your product, not your fax stack.
AI-Powered Diagnostics
Gemini 2.5 Flash analyzes telecom traces in seconds. Get root cause analysis, not just error codes.
Sub-50ms Webhook Ingestion
Decoupled Pub/Sub architecture ensures 100% webhook resilience. Never miss an inbound fax.
Send & Receive API
One API to send PDFs, receive inbound faxes, and track delivery status. E.164 numbers, any carrier.
Outbound Webhooks
Real-time push notifications with HMAC-SHA256 signatures. Stripe-style verification.
Usage & Billing API
Metered billing via Stripe. Track pages, overages, and invoices programmatically.
Number Management
Search, provision, release, and reclaim fax numbers via API. 30-day grace period on releases.
Pricing
Simple, transparent pricing
Start with a 14-day free trial. Scale as you grow.
Growth
- ✓5,000 pages included
- ✓AI diagnostics
- ✓Outbound webhooks
- ✓Email forwarding
- ✓REST API + SDKs
- ✓Community support
Enterprise
- ✓20,000+ pages included
- ✓Everything in Growth
- ✓Signed BAA for HIPAA
- ✓Custom data retention
- ✓SLA guarantee (99.95%)
- ✓Dedicated support
All plans include a 14-day free trial. No credit card required.
Security
Built for healthcare compliance
HIPAA Ready
Signed BAA available. PHI encrypted at rest and in transit.
SOC II Architecture
Immutable audit trails, timing-safe auth, zero PHI in logs.
48-Hour Auto-Delete
Fax PDFs auto-purge from storage. Private bucket, signed URLs only.
Ed25519 Webhooks
Every inbound event cryptographically verified. 5-minute replay window.